Foldable shelf



FIG. 1 is a perspective view of the foldable shelf of our new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is an enlarged bottom plan view thereof;

FIG. 4 is an enlarged front elevational view thereof, the rear elevational view is a mirror image thereof; and,

FIG. 5 is an enlarged side elevational view thereof, the opposite side is a mirror image thereof. 

The ornamental design for a foldable shelf, as shown and described. 